Java Program to Print a Square Pattern for given integer

// Java program to print a square pattern with command 
// line one argument 
import java.util.*; 
import java.lang.*; 

public class SquarePattern { 
    public static void main(String[] args) 
    { 
        Scanner sc = new Scanner(System.in); 
        System.out.println("Enter a number"); 
        int number = sc.nextInt(); 
        int arr[][] = PrintSquarePattern(number); 

        // int num = 3; 
        int k = 0, m = number - 1, n = number; 
        int l = 0; 
        if (number % 2 == 0) 
            m = number - 1; 
        else
            m = number; 

        for (int i = 0; i < n / 2; i++) { 
            for (int j = 0; j < n; j++) { 
                System.out.format("%3d", arr[k][j]); 
            } 
            System.out.println(""); 
            l = l + 2; 
            k = l; 
            // System.out.println(""); 
        } 
        k = number - 1; 
        for (int i = n / 2; i < n; i++) { 
            for (int j = 0; j < n; j++) { 
                System.out.format("%3d", arr[k][j]); 
            } 
            m = m - 2; 
            k = m; 
            System.out.println(""); 
        } 
    } 

    public static int[][] PrintSquarePattern(int n) 
    { 
        int arr[][] = new int[n][n]; 
        int k = 1; 
        for (int i = 0; i < n; i++) { 
            for (int j = 0; j < n; j++) { 
                arr[i][j] = k; 
                k++; 
            } 
        } 
        return arr; 
    } 
}